Contamination of industrial refrigeration systems and heat pumps

Group 1: Contamination of industrial refrigeration systems and heat pumps

In these four seminars the consequences of contamination in industrial ammonia refrigeration systems with primarily water, air, and oil, but also other substances like wrong oil types or chemical substances will be examined and discussed.

It will be discussed how the pollutions are discovered and how it can be removed manually and / or automatically.

The economic consequences for the operating economy as well as how this are calculated will be discussed. A free program for calculating the impact of water and air in ammonia systems will be introduced and reviewed. The program calculates reduced refrigeration capacity and the increased energy consumption as well as payback times when investing in automatic cleaning systems.

A couple of “trouble shooting cases” from real life is reviewed with an introduction to how you work systematically by using facts, knowledge, and experience in finding the “root courses” for big problems like compressor accidents, lack of refrigeration capacity, sludge in the systems etc.

How does it get there?
What are the consequences of air in the systems to discharge pressure, power consumption and chemical reactions? 
How do we get the air out manually and / or automatically?


Air is the course of many problems in industrial refrigeration systems. It gives both increased power consumption and reduced refrigeration capacity as well as chemical reactivity with corrosion and oil decomposition. This leads to unnecessary large energy and service cost on the systems. In this seminar the consequences of air in the systems are reviewed. We look at how it is detected, how the economic consequences are calculated, and how the air is removed manually and / or automatically.

How does it get there? 
What are the consequences of water in the systems to suction pressure, power consumption, and chemical reactions? 
How do we get the water out?
How do we calculate the cost of running the system with water?
The free CPAWcalc program for calculating the consequences of air and water in the systems are introduced and reviewed.

Water is the reason for many problems in industrial ammonia refrigeration systems. It gives both increased power consumption and reduced refrigeration capacity. Further it creates a very chemically reactive environment with corrosion and oil decomposition. This leads to unnecessary high energy and service cost. In this seminar the consequences of water in the systems are reviewed, how it is detected, measured, and removed. How to calculate the economic consequences is reviewed and a free calculation program made by Cool Partners will be introduced and reviewed. The CPAWcalc program will calculate reduced refrigeration capacity and the increased energy consumption as well as payback times when investing in automatic cleaning systems.

How does it get out in the system? 
What are the consequences of oil in the system to efficiency? 
Can we do something to stop it? 
Can we return it to the compressors from the LP side? 
Can the oil out blow be stopped on the HP side in the system?
Industrial refrigeration oils what are they and why?
oil analysis, how can we use them as trouble shooting tool

Oil give reason to many problems in industrial ammonia refrigeration systems. How can we prevent the oil from reaching the evaporators and what happens if the oil gets into the evaporators anyway?

How can the oil in a safe way be returned from the system to the compressors and how to avoid contaminating the oil in the compressors? What is the importance of the oil types and what happens if the wrong oil types are used? What can we see in oil analysis and how can oil analyses results be used as a powerful trouble shooting tool?

Severely decomposed oil suddenly appearing in compressors.
Reciprocating compressors failing and destroyed with no explanations? 
Crystals and powder created in systems? 
Sediments created in systems blocking oil passage. 
Why is some oil “hanging” in the evaporators? 
R22 in R717 systems, what happens?

Based on reel experienced “case stories” we review how systematic trouble shooting progress based on facts, know-how and experience. It is shown how the root course of the problems seen on the system is discovered and solved, so that not only the “symptoms” are being addressed and solved. It will be shown how important it is to find the reel root course of the problems behind expensive compressor failure and damage, to prevent it from happening again after a very short time.